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Each guide includes a smart grade selector, OEM compatibility matrix and a long-form FAQ - built for fleet managers and workshops.
GEG DIESEL EXTRA (15W-40)
High-quality multigrade mineral lubricant of the SHPD type, providing extended service life. High-performance oil for heavy-duty diesel vehicles, including high-power units. Formulated for moderate-duty applications across a wide range of commercial vehicles, buses and industrial equipment requiring conventional heavy-duty engine oil protection.
GEG DIESEL PREMIUM
Mineral diesel engine oil formulated for a broad range of heavy-duty applications. Suitable for low-emission engines, including Euro II, Euro III and some Euro IV engines. Recommended for modern diesel engines in trucks, off-road equipment, public works and heavy industry, with universal use across mixed fleets. Provides advanced wear protection against oxidation and deposits, helping maintain engine cleanliness and efficiency.
GEG DIESEL ULTRA CK
Modern ACEA E9 / API CK-4 lubricant designed for the latest Euro V and Euro VI engines with low sulphated ash content (Low SAPS) requiring DPF, EGR, or SCR emission treatment systems. Provides extended service life with excellent thermal stability and low engine contamination, along with high anti-wear and anti-corrosion performance. Suitable for trucks, buses, light commercial vehicles, as well as agricultural and construction machinery. Provides extended service life with excellent thermal stability and low engine contamination, along with high anti-wear and anti-corrosion performance.
GEG DIESEL ULTRA FS
Fully ynthetic HC lubricant with ACEA E9/E11 quality level, designed for the lubrication of Euro V and Euro VI engines requiring low sulphated ash content (Low SAPS) for emission control systems such as Diesel Particulate Filters (DPF), Exhaust Gas Recirculation (EGR) and Selective Catalytic Reduction (SCR) systems. Suitable for trucks, buses and light commercial vehicles, with or without particulate filters, as well as agricultural and construction machinery.